Human endpoints

5 important questions on Human endpoints

What are the categories of discomfort?

Minor
  • single blood sampling or injection
  • immunisation

Moderate
  • repeated blood sampling, injections
  • recovery from general anaethesia
  • metabolic cage

Severe
  • acute toxicity test
  • vaccine potency tests

Non-recovery
  • procedures using general anesthesia (animals do no recover)

How do you determine animal welfare?

  • Analogy principle (what is damaging for humans can also damage animals)
  • Absence of negative indicators
    • behavioural
      • abnormal, less grooming, isolation
    • physiological
      • weight losse, less food intake, pilo-erection, respiratory signs, heart rate, stress hormomon level
    • post-mortem
      • fatty liver, muscle volume, infections
  • Presence of positive indicators
    • normal/active behavior

How can you reduce discomfort?

  • Training of animals with reward
  • adequate application of anethetics, analgesics, antibiotics
  • standardization of procedures
  • competence of staff
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What are human endpoints and what is reason for humane endpoints?

To define a set intervention points which allows the collection of quality scientific data but limits the amount of suffering for the animal

  1. The proposed goal of study has been reached
  2. To limit unintended, unwanted or severe discomfort until a minimum
    • animal in bad condition can give unreliable results

How to asses human endpoints?

  • Observation and monitoring (clinical signs)
  • biomarker (in blood, urine)
  • microchip implant systems
  • pilot experiments

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